For service and parts needs, visit your dealer. You will receive genuine GM parts and GM-trained and supported service people.
Genuine GM parts have one of these marks:

Vehicle Care
California Proposition 65 WarningTurn and Lane-Change Signals
Move the lever all the way up or down to signal a turn.
An arrow on the instrument cluster will flash in the direction of the turn or
lane change.
Raise or lower the lever until the arrow starts to flash to signal a lane change.
The turn signal flashes three times.
The lever returns to its ...
Engine Oil Life System
The engine oil life system calculates engine oil life based on vehicle use and
displays the CHANGE ENGINE OIL SOON DIC message or Code 82 DIC message when it is
necessary to change the engine oil and filter.
Remember, the Oil Life display must be reset after each oil change. It will not
reset ...
Replacing LATCH System Parts After a Crash
WARNING
A crash can damage the LATCH system in the vehicle. A damaged LATCH system
may not properly secure the child restraint, resulting in serious injury or even
death in a crash. To help make sure the LATCH system is working properly after a
crash, see your dealer to have the system inspec ...